<template>
  <div id="DetailNavBar">
    <nav-bar>
      <div slot="left" @click="backClick">&lt</div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles"
             class="title-item"
              :class="{active : index === currentIndex}"
              @click="titleClick(index)">{{item}}</div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from "components/common/navbar/NavBar";
export default {
  name: "DetailNavBar",
  components:{
    NavBar
  },
  data () {
    return {
      titles:['商品','参数','评论','推荐'],
      currentIndex : 0
    }
  },
  methods:{
    titleClick(index){
      this.currentIndex = index
    },
    backClick(){
      // this.$router.go(-1)
      this.$router.back()
    }
  }
}
</script>

<style scoped>
  .title{
    display: flex;
  }
  .title-item{
    flex: 1;
  }
  .active{
    color: var(--color-high-text);
  }
</style>